Jacob reese



@leiten tstes gatwt @itin/Q JACOB Hansa, or Pirrsnne, PENNSYLVANIA, AssIeNoR To HiMsE-LF AND ROBERT4 c. ToT'rEN, or sAMu PLAGE. l

Letters Patent No..76,100, (lated March 31, 1868.

IMPROVBD ent-causent.

@tige Stimuli ruimt in in tlg-isi trttert rtcn mit nuttig putt nf tige time.

To A LL WHOM 1Ty MAY CONCERN;

Be it known that I, 'JACOB REESE, of the city' ofIittsburg, in tbecounty of Allegheny, land Sta-te of-Penn- Y sylvania, have invented a new and use-ful Improvement in Ore-Crushers; and I do hereby declare the following to be a full, clear, and exact description thereof.

In preparing a fixv for use in a p11ddlingfurnace,ithas hcretoforcc been customary to crush the ore employed in cru-shers of about one inch aperture at the point where tbe ore escapes from the crusher, so that the ore is dischargedin lumps or kernels. vAs the ore, then has to be melted preparatory to beingy used as a x', some two hours are necessarily occupied in this part'ofthe process of preparation. But by reducing the ore to a state of greater neness, so that it can be mixed up in Ythevcondition of a paste, it can be directly applied as a iix', without thefdelay attending a separate melting process. My invention relates to the construction of anv orecrusher which will reduce the ore to any required degree of fineness, beforedischarging it through the aperture of exit; and consists inthe construction andjarrangement of devices for giving to the -movable jaw of au ore-crusher, 4separate and consecutive :crushugand grinding motions, in connection with devices for regulating and adjustsng the position'of the working-jaws relative to eachother, and to -lthe "erkto he done.

To enable others skilled in the art to'inalie-and use -my invention, I will pro oecd to describe its construction and mode of operation,referring tothe accompanying drawing, making a part of this specification, in which- Fig-uf@ 1 is Aavertcal section, running transversely through the crnshingjaws. l

Figure 2 is' a horizontal section of the stationary jaw, and a'portion of the frame, showing the groovel and 'Tv-head bolt by. which thejaw is held in place and adjusted. y

Figure 3 shows, in an end vie'w somewhat enlarged, the peculiar shape of thecam employed.

4Like letters of reference indicate'lilre partsin each. A

In any suitable frame' b, I place the crushing-jaws c c', theformer stationary, the latter movable. The upper end of the movable jaw c Ais supported by a. cam-yoke orvbox, ci, which surrounds the cam d', and which latter is attached to and operated by an' axle, :n.1- 'Io the axle a: motion is communicated by a. build-whereby",v or in any other well-known. manner. gis a lywheel of the'usu'al construction. The peculiar shape of the' cum' d ismore clearlyshpwu in iig. 3, where it is somewhat enlarged, rthe dottedfcrve being a; circle, and the full line an end view'of the cam. Through ninety degrees of each, as at ja, the faces of the circle and cam corre:y spend'. In the 4opposite quarter-of the circle, I narlied e, thevrudius of curvature of the cam is somewhat shorter than'thatof the circle. In the quadrants z' and o arcs are drawn,vconnecting the extremities of the arcs a and Then, witha properly-constructed cani-yoke or box OZ, the cam d. so shaped, will impart to thejaw c a downward, backward, upward, and forward motion, each motion being distinct, and allncoming in the order named. It' the cam revolve forward, the quadrant marked becomes the working-face. Having an increasing radius, it moves the jaw forward' or otherwise,as above described, and the quadrant aliaving a. constant radius, prevents the jaw c from vmoving in a direction. at right angles to the' directionof the motion imparted to it bythe quadrant t'. Consequently, as the cani df revolves, it will move the upper end of the jaw c forward in a direct line, toward theother jaw c, whereby theore will be subjected to a. direct crushing force. As the jaw c has at this part of its stroke no vertical motion, there is less danger otuthe ore slipping, and consequently greater certainty of thejaws taking a perfectly secure bite, than-would otherwise b tb`e case. The jaw c then'receives a downward-throw, duringwhich, except as hereinafter to be described, it neither approaches to nor recedes frorn the opposite jaw c. As the faces of the jaws c and c converge toward theirlower ends, the ore, while being carried downward by this motion, is subjected to a grinding force, and still further pulverizved. The upper end of the jaw c is next thrown backward, as thecam d continues itsrevolution', which allows the ore to fall lower between the converging faces of the jaws c c". Lastly, an upward motion is given to the jaw c. by which the grinding is continued, and the jawc brought to the proper position for a new forward stroke. Asdthevore becomes sufliciently pulverzed, it falls through between the lower ends of the jaws c c', which are so set -as to leaveat the whole or some part of the stroke a suliicient aperture, e, for thatpurpose. But in order to increase the grindt ding eicioncy of the machine, I malte the lower end of the movable jaw of a gradually-increasing thickness upward, so that `the plane or its rear face shall make arrangle with the plane of itsv frontorlworking-face, and rest it, at a. pointA where the thickness is increasing, against a frctionfrollcr, m, which rests on journals fn, attached yto the frame b. Then, when tllejaw c receives a. downward stroke, as above describerl, nnd conse'- quently acts with a grinding' motion, its lower end will be made to roll forward on the roller m, stilll further crushing as vWellas grinding the partially-pulveriz'ed ore, `and thereby reducingit to a condition of greater lineness. Anslvby adjusting the jaws c ofso that the aperture z between their lower ends shall be correspond-s.

ingly small, the process can be carried on 'till the ore is ground as nc as may be necessary. But in' order that the upward movement of the jaw c sha-ll not unduly enlarge the apertures, I vplace the friction-roller m at suoli a point that it Vshall operate against the rear face of the'jaw 0, alittle above its lower end. rlhen with the backward throw of' the upper end of the jaw c', its .lower end` will be thrown slightly forward, and the breadth of the aperture z be slightly lessened, which lessening will compensate for the increase-of breadthgiven to the aperture by the receding of the jaw'- c on the roller m, as4 the former rises. The jaw c operates as a lever, the roller` m being,r the fulcrum, to' partially close the aperture z, whenotherwise it would be too considerably enlarged. I thus provide for keeping an aperture, 2,10 a-co'nstant or nearly constant breadth, so that no ore can pass through tillit has been suliciently pulverzed. v

Under the great amount of friction to which the jaws of ore-crushers are necessarily subject, they wear out with some rapidity, particularly at or near their lower ends. When eitheror both the jaws e c become so Wornras to enlarge the aperture betweenth'eir lowerends, provide' for-lowering the stationary jan' c, so that aportionof its Workinglfaceless iyorn shall come-opposite to the lower end of the movable jaw-c. This I accomplish by making a T-shapel groove, s, in its rear face, in which I place the heads of onel or more squarehoad orT-head holtsis', and running-the Shanks of'such bolts tllrcuglscme part of the frame 6', fscrew them up snugly by nutst. 4'lheneto raise or lower thejaw c, I loosen the 1 iutst,slide`the ja\v up or clown,I the square or T- heads of the bolts s sliding in the T-shaperl groove s. If the face of thefstationary jaw c beco'mes so worn' that this motie of adjustment .will not suflice, I loosen 'the nuts t still more, and place between the jaw c and the frame b,a Iinin-gpr backing ol'janydesirable thickness, whereby itnvill be made to stand sufficiently near tothe Working-jaw e.

The advantages l claim are durability, simplicityo construction, a. freed-om from liability to break or get vout o'f order, a more convenient mode off-adjustment, and a better mode of' combining and utilizing the crushing and'grinding motionsdescribed, than is found in machines generally in use.

By my machine, with thejaws properly set and' adjusted, the orecan be pulverized to anyrequired degree of inenesswith eas'e and rapidity. The faces of thejawsc and c maybe either plain, or may be-corrugated=n any desirable direction. I

Having described my improvement', what I claim as my invention, and desire to secure by'Letters Patent, i`s

1. The crushing-jaw cjprovided vwith the square-opening d, in combination with the camel', frictiomfoller m, and adjustable jaw Vc, all constructed substantially as shown and described. v

2. A square head or T-head bolts', iu combination with a correspondingly-shaped groove, s, ina stationary jaw for. adjusting the stationary'jawof en orc-crusher, substantially as set forth.

In testimony whereof, I, thesaid JACOB Runen; have. hereunto set my hand.

Witnesses:

Wu. F. GRAHAM,

Gao. H. Cn'nrsrr. 

